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Efficiency Step up Transformer S11 1250kVA 1600kVA 10 to 15kV Stable Output for Renewable Grid Connection Projects
Product Overview
S11 Series 1250kVA / 1600kVA High-Efficiency Oil-Immersed Step-Up Transformer. Our S11 series step-up transformers are specifically engineered for the rigorous demands of renewable energy grid connections. Whether for utility-scale solar farms or wind power projects, these units provide a stable 10kV to 15kV output. Built with premium materials, they ensure high conductivity and minimal core loss, making them the preferred choice for EPC contractors seeking reliable power evacuation in harsh environments.
Core Selling Points
Optimized for Renewables: Seamlessly bridges the gap between low-voltage power generation and medium-voltage grids (10kV-15kV)
High Efficiency & Low Loss: The S11 wound-core design significantly reduces no-load losses and noise levels compared to older models
Extreme Weather Resilience: Specially treated for high-temperature and high-dust environments typical of African and Middle Eastern regions
Superior Load Capability: Robust thermal design allows for continuous operation under fluctuating power inputs from solar/wind sources
Detailed Technical Specifications
Core Design
Utilizes high-quality, cold-rolled grain-oriented (CRGO) silicon steel with a multi-step lap joint to minimize magnetic resistance
Winding Material
High-purity electrolytic copper (or aluminum upon request) with multi-layer insulation to withstand voltage surges and harmonic distortion
Cooling System
Natural Oil Convection (ONAN) with reinforced radiator fins for enhanced heat dissipation in ambient temperatures up to 50°C
Insulation Class
Level A insulation with high-flashpoint mineral oil to ensure long-term dielectric stability
Tap Changer
Off-circuit tap changer (OCTC) with ±2*2.5% range to maintain a stable output voltage despite grid fluctuations
Custom Solutions for High-Dust Environments (Africa Region)
In many African regions, fine sand and extreme dust often lead to seal degradation and cooling obstructions. We address these operational challenges with targeted engineering:
Challenge: High Sand/Dust leading to Seal Failure & Oil Leaks
Solution: We utilize Double-Sealed Nitrile Rubber Gaskets and reinforced tank flanges. All joints are precision-machined to ensure a hermetic seal that prevents fine dust from eroding the gaskets, effectively eliminating the risk of oil leakage.
Challenge: Accumulation of Dust on Radiators
Solution: Our radiators feature a Wide-Pitch Fin Design and specialized anti-corrosion coating. This prevents sand buildup and makes cleaning easier, ensuring the transformer stays cool even during sandstorms.
FAQ for EPCs & Distributors
Q: Can this transformer handle the harmonic loads from solar inverters?
A: Yes, our S11 units are designed with reinforced insulation and specific winding structures to handle the harmonic content typical of renewable energy systems.
Q: Do you provide Type Test Reports for international bidding?
A: Absolutely. We provide full documentation including routine, type, and special test reports (IEC 60076 standards) required by EPC companies.
Q: How do you prevent oil leakage during long-distance inland transport in Africa?
A: We use reinforced structural supports and vacuum-filling techniques to ensure the transformer remains perfectly sealed and stable during rugged transit.
Q: Is it possible to customize the voltage ratio (e.g., 0.48kV to 11kV or 33kV)?
A: Yes, we specialize in customized primary and secondary voltages to match your specific grid requirements.
Contact our engineering team today for a customized quote and technical drawing for your next grid project!
